123031012211012 has 24 divisors (see below), whose sum is σ = 215717831535360. Its totient is φ = 61397458758720.

The previous prime is 123031012210973. The next prime is 123031012211017. The reversal of 123031012211012 is 210112210130321.

It is not an unprimeable number, because it can be changed into a prime (123031012211017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9719564 + ... + 18453507.

It is an arithmetic number, because the mean of its divisors is an integer number (8988242980640).

Almost surely, 2^{123031012211012} is an apocalyptic number.

It is an amenable number.

123031012211012 is a deficient number, since it is larger than the sum of its proper divisors (92686819324348).

123031012211012 is a wasteful number, since it uses less digits than its factorization.

123031012211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28175171 (or 28175169 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 123031012211012 its reverse (210112210130321), we get a palindrome (333143222341333).

The spelling of 123031012211012 in words is "one hundred twenty-three trillion, thirty-one billion, twelve million, two hundred eleven thousand, twelve".